Merge pull request #10821 from blueyed/asan

tests: improve escaping of special chars, forward all sanitizer options

src/nvim/testdir/runnvim.vim

@@ -7,6 +7,13 @@ function s:logger.on_exit(id, data, event)
   call add(self.d_events, [a:event, ['']])
 endfunction
 
+" Replace non-printable chars by special sequence, or "<%x>".
+let s:escaped_char = {"\n": '\n', "\r": '\r', "\t": '\t'}
+function! s:escape_non_printable(char) abort
+  let r = get(s:escaped_char, a:char)
+  return r is 0 ? printf('<%x>', char2nr(a:char)) : r
+endfunction
+
 function Main()
   let argc = +$NVIM_TEST_ARGC
   let args = []
@@ -26,9 +33,8 @@ function Main()
         \'join(map(v:val[1], '.
         \         '''substitute(v:val, '.
         \                      '"\\v\\C(\\p@!.|\\<)", '.
-        \                      '"\\=printf(\"<%x>\", '.
-        \                                 'char2nr(submatch(0)))", '.
-        \                      '"")''), '.
+        \                      '"\\=s:escape_non_printable(submatch(0))", '.
+        \                      '"g")''), '.
         \     '''\n'')')
   call setline(1, [
         \ 'Job exited with code ' . results[0],

test/functional/helpers.lua

@@ -445,6 +445,8 @@ function module.new_argv(...)
       for _, k in ipairs({
         'HOME',
         'ASAN_OPTIONS',
+        'TSAN_OPTIONS',
+        'MSAN_OPTIONS',
         'LD_LIBRARY_PATH',
         'PATH',
         'NVIM_LOG_FILE',